exhaust gases, are very efficient, and can be run smoothly 

 at speeds from zero to the maximum safely possible on 

 roads, since the propelling unit is an electric motor. 



The rapid transfer of information between points at 

 all distances up to many thousands of miles apart is abso- 

 lutely essential for the best possible coordination of world 

 economic activities. The solution to the most difficult prob- 

 lem — that of information transfer over distances greater 

 than about 100 miles — lies in the use of satellite relay sta- 

 tions orbiting the Earth. The "random orbit" system, em- 

 ploying about fifty small repeaters about 500 miles above 

 the Earth's surface, will make possible the transmission 

 of voice and data (binary numbers) between any points 

 on the Earth, with complete privacy for those using the 

 satellites, and with transit times less than one hour. The 

 "three station" system, having 3 large relay satellites spaced 

 at equal intervals along the equatorial plane of the Earth, 

 and at 22,000 miles distance, will provide virtually in- 

 stantaneous voice and picture (television) transfer between 

 important cities possessing the necessary large transmitting 

 and receiving equipments. 



In many dry regions of the world, irrigation could be 

 accomplished by utilizing nuclear power to pump fresh 

 water, obtained by electrolytic desalinization of sea water, 

 into canals or pipes. The construction of irrigation networks 

 could be done with diesel digging machines, and electricity 

 for water desalting could be generated by solar cells or by 

 the nuclear reactor. The desalinization of sea water is now 

 perfectly feasible at a moderate cost, and is the only prac- 

 ticable method of providing large quantities of water to 

 desert areas where there is no subterranean water available. 



Serious efforts to limit the rate of population growth 

 in the new nations, in which this rate tends to be very 



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